Loom.



NiT'nD ,STATES PATENT OFFICEe JOHN n;nURT, OE- OHERRYVILLE, NoRTI-r CAROLINA, AssreN-OR OF ONE- ImALn froynAvID P. RHODES, or cHERaiifvILLn, NORTH CAROLINA.

-. Loot/i."

srncinrcafrroiv forming part ef Lettere Patent No. 696,367, dated December 31,1901.

I Appneenen inea April 20, 1901.

i f- HU whom, it may concern: Be it known thatLJOHN H,HURT,of Cherryville, in the county of Gaston vand State of .1#orth'vCai'olina, haveinvented certain newv j' and-usefulImprovements in Looms, of which the-'following-is a specification. v

This invention relatesto looms, and partieularly to the let-olic mechanismvthereo'f, and isdesigned also with reference to the take-up i mechanism as Well'. :n

The invention relates not alone to any specific type offloom, but iscapable of being employed'with` advantage in connection vwith v.any looinof iany kind employing a positive 1,5 let-Off; 'The object 'ofi my inventionis to provide means for preventing a loomfrom Alettingod the warp'andmaking thin placesin the cloth 4such as results when the"Warp-threads are zo moved any distance'after the cessation of the throwing-in of the filling or -weft for either a short or a long pick; and `a further object of my invention is to providel means additional tothose which stop the let-off for also stopping the take-up.'

To these' ends my invention consists in the'lconstrnction and :combination ofl parts subst'antialiy as hereinafter,` `described and claimed. 'M

Infthe accompanying drawings, Figure 1 represents an endelevation of a well-.known form' oloomhavingiapplied thereto an embodiment of -my`invention, a portionof` the frame ybeing broken out to'show the take-up gearing 'supposed to be located at the farther end'of the loom.f'Fig. 2 represents a detail sectiononli'ne .2, 2. of Fig. 1. Fig. S-represents a vdetail rontelevation of a portion of the frame and some of the parts supported 4o thereby, including the belt-shipper. Fig. a isyan enlarged perspective view of the means fcrpreve'nting the operation ofthe let-oil n mechanism. f Fig.' 5 isv a similar viewreprel sentinga modi ficationfhereinafter referred to.

f `,The frame of theloom-is'represented at 10,

the partici the frameat the farther end,looi; atlflige 1,"beihgf `indicatedat' 101%. The j I 'iarpbeam'is 'represented at 1.1, auf ,1, 2-1s3thA h'iproll, 13 one arinjof the* 5e my, 14; the tresses-eem, vlette gener pinion V,on-tire,cloth en ,take-up roll, 16 vthe takeup Serial No; 56,744. (No model.)

ratchet-Wheel, 17 the pawl, which is reciproe: cated by any suitable means to imparta step by-steprotation to the ratchet-Wheel 16, all

of these being represented as parts of a wellknown form of loom. The pinion 18, meshing withv the gear 11, the Worm-Wheel 19, secured to rotate with the pinion 18 and meshing with a Wormf20 on a vertical .shaft 2l, which is mounted in bearings in a stand or 6o bracket attached to the frame 1Q, said shaft 21, having a'ratchet 22, operated'by'a pawl 23 at one end of a lever 2, pivoted loosely,7 on the wormshaft 21, the rod 25, connected with the other end ot' the lever 24, said rod 65 having its other end connected with a lever` 26, are also all of a well-known construction, said lever 2G being connected to the whiproll support through the rod and spring connection, such as shown in the drawings, all 7o being well known and needing no description herein. The lever 2l is actuated so as to cause the pawl to actuate the rat'Ohet-22'and effect the positive let-off by means of the Worm-gearing, said lever being moved in the proper direction by `the rod 25, said rod 25 being drawn in the proper direction by means ot the rod 28, pivoted tolthe arm 13, andhaving an eye surrounding the rod 25,'a stopblock 27 ou the rod 25 being employed, as 8o usual, to cause the rod 28 to exert the necessary pull on the rod 25. All of this mechanism is also well known.

So far as my invention .is concerned, the mechanism for oscillating the pawl about the axis of the shaft 21 may be variously modied without departing from the principle of my said invention, and the style of loom may be Widely varied.

I Will now proceed to describe one Way in 9e Whichl have carried my invention into practice. l

Referring to Figs. 1, 2, and il, ashort lever SO is shown as mounted to oscillate upon the lWorin-shaft 2l, said lever carrying at its outer 95 end a. curved shield 81, extending over the teeth of the ratchet 22 and adapted to be swung to a position where the oscillations of the pawl-lever 21will=cause the point of the Apawl to slip back and forth over said shield xco Withoutengaging the teeth of the ratchet.

Normally this shield 3 1 remains in a position such as indicated-in Figs. 2 and 4; but when the weft detector commonly employed in looms, or any other means are employed' designed to automatically stop the' loom upon the exhaustion or breaking of the weft operfates, the shield'3l is moved to a position, so

as to be interposed 4between the pawl'and the ratchet. I will now describe one 'way in which to effect the motion of the shield. The

end of the lever 30 opposite the shield 31 is' is provided with an elbow-arm 39, which isadapted to engage the belt-shipper lever 40 and throw i.t"out of the notch el? the retaining-plate 4l, so that said lever 40 willl bev swung on its pivotby means of the spring 42 and shift the'belt from the fast to the loose pulley, and thus stop the loom.

I have not'attempted to illustrate any spe- I cial form 'of weft-detector, since I may employ any well-'known or preferred type.v It is sufficient to enable any one to understand the principle of my invention toy state'that the weft-detector will'be suchl that iinniedif. ately upon the failure of the filling the shaftl 3S will be rocked by the mechanism controlled by said weft-detector, such lrocking movement ofthe shaft 3S being' in a direction to force the upper end of the belt-shipper lever 40 out of the notch ofthe retaining-plate 41, resulting in thel shifting ot' the vbelt to the loose pulley, as described. This movement of the shaft 38 is in a direction to cause the arm 37 toY move in the direction of the arrow in Fig. 1, causing thel rod 33 to move in the direction of thearrow adjacent thereto, and thus carry the shield 3l under the point of the pawl 23, as will now be obvious. Therefore, although the inertia of the partszof the loom may cause one or more picks to be made after thebelt has been shifted there will be no let'off of the warp, owing to the fact that the shield is interposed, as stated, at the instant of the movement of the shaft 38. I prefer to make connections also with the takeup mechanism, so as to prevent the operation thereof simultaneously with the stoppage of the operation of the let-off pawl. Oneway in which I may carrythis part oli' my inventhe take-np.

tion into effect `is by means of a catch-a-rm'43, secured to the shaft 38 and having-a can.- shaped lowerend which engages beneath a finger-4:4, carried by the arm of the take-up pawl17. arm 43 is so formed that when the shaft'38 is rocked, as has been mentioned, the pawl 17 will be lifted sufficiently to clear the teeth of the ratchet-u-'heel16, and thus instantly stop The hook or cam shaped end ofthe Referring to Figs. 4 and 5, it-will be seen that there is a slight difference in the pawl and the shield. The form of shield shown in Fig. 4 isintended to be adapted vfor'use on looms which are already constructed with a let-ofi pawl such as shown in said figure. By forming the pawl with a toerisingabove the plane of the ratchet 22, such 'as .indicated in Fig. 5 at 23", a shieldmay be .used such as indicated at' 31 in said .'Fig. .5, said shield thus oscillating in a lplane'fabove the plane of the upper edge of the ratchet 22. In some forms of loomsI prefer to employsuch a pawl and shi'eld as just described in connection with Fig. 5.

Having now described and illustrated sufficiently one form or-embodiment of my in vention, I wish it to bedistinctiy understood that I do not limit myself to the details of construction shown in the drawings, for it'is obvious that my improvements may be variously modified by any skilled loom' mechanic, vso as to apply it to other forms of loom than that which I have somewhat conventionally illustrated. i

, I claimv 1. A loom comprising in its constructions. positive let-olf mechanism including a pawl and ratchet, a shield adapted to prevent engagement of the pawl with the ratchet, and connections between said shield and the power-controlling mechanism of the loom for operatingl the shield simultaneously'with the iirst movement ofthe said power-controlling mechanism.

.Jrs 2. A loom comprisingyrn its construction a positive let-.olf mechanism including a pawl and ratchet, a shield adapted to prevent lengagemen t of the pawlwith the ratchet, a beltshipper, and means whereby movement of the belt-shipper to stopfthe loom will simnltaneously operate the shield to prevent actuation of the letfoft ratchet bythe pawl.' n

3. A .loom comprising in its construction a take-up and a' positive let-off mechanism/dn cluding a pawl and ratchet, a shield adapted to prevent engagement of the pawl with the ratchet, a belt-shipper, and means whereby the lfirst n novementof'rthebelt-shipper to stop the loom willstop movement of the takeup `mechanism and simultaneously operate IIO the shield to prevent actuation of the letoA ratchet by the pawl. V

4:. A loom comprising in its construction a positive let-off mechanism` including a pawl and ratchet, ashield ladapted to prevent engagementof the pawl with the ratchet, a takeup mechanism including a pawl and ratchet, and connectie-ns between the saidshi'eld 'and the take-up pawl and the power-controlling mechanism of the loom wherebymovement lof the latter .will simultaneously disengage the take-up pawl from lits ratchet and move the shield to disen nrage the let-od pawl from its ratchet. 5. A loom comprising in its construction a positive let-olf mechanism` including a pawl adapted to push the pawl away' from said ratchet, a lever .34.- mount'ed' on 'the `fram-e of the loom, a rod connectimgsaid lever with the shield-lever, a rock-shaft 38 Ahavinganal-m conneftecl wit-h the lever 34 and having a catcha take up mechanism. including a ratchet and pawl, said pawl having a finge-r adaptedto be operated upon bythe catch-arm -for elevating the pawl, and `means 'for oscillating the shaft 38.

6. -A loom comprising'in-its construction a positive let-olf mechanism including a pawl and ratchet, a lever mounted to oscillate on the axis vof the ratchet and having a shield adapted to push the pawl away from ,said ratchet,'a lever 34: mounted on the frame of the loom, a rod connecting said lever with the shield-leven 'a rokfs'iia'f't'gSS."having? ian-ann. ze

connected with thelever 34 and havin' ai catch-arm 43,atak'e-up mechanism inclu:

a ratchet and pawl, said pawl having a' finger adaptedto be operated upon by theentail-mir;

for elevating the pawi, a.' belt-shipper 1e vei fa' having a spring for throwing it in one direction and a retaining-plate forl holding it at one extreme of position inopposition to the said spring, and an' arm carried by the shaft` 38 and extending past' the belt-ship I'ierleven4 3p and adapted to disengage said leverfrom'the retaining-plate. l

In testimony whereof I have axed my signature in presence of two witnesses.

JGHN H. HURT. Witnesses:

l A. W. HORNELL,

E. M. BERRY. 

